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Optimisations for expressions of the form "<value> IN (SELECT <column> FROM <table>)". (CVS 4579)

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FossilOrigin-Name: 56d0e32677744df8570b519fae1c04da4ea4984d
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danielk1977
2007-11-29 17:05:18 +00:00
parent ade8648301
commit 9a96b66810
9 changed files with 469 additions and 34 deletions
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10
src/vdbeaux.c
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@@ -2111,10 +2111,12 @@ int sqlite3VdbeRecordCompare(
if( rc==0 ){
if( pKeyInfo->incrKey ){
rc = -1;
}else if( d1<nKey1 ){
rc = 1;
}else if( d2<nKey2 ){
rc = -1;
}else if( !pKeyInfo->prefixIsEqual ){
if( d1<nKey1 ){
rc = 1;
}else if( d2<nKey2 ){
rc = -1;
}
}
}else if( pKeyInfo->aSortOrder && i<pKeyInfo->nField
&& pKeyInfo->aSortOrder[i] ){